FOLDABLE PNEUMATIC TIRE

摘要

A foldable pneumatic tire comprising an annular tread, bead portions and a pair of sidewalls extending therebetween collapsible inwardly and concentrically to said tread. Each of the sidewalls is formed in an inwardly bent zone when folded with one or more circumferential grooves opening at the outer surface thereof, to effectively prevent wrinkles which would otherwise occur in the bent zone resulting ultimately in cracks in the sidewalls after they have been maintained in a folded condition for a long period of time.